کنفرانس مهندسی برق ایران

صفحه اصلی / سی و چهارمین کنفرانس بین المللی مهندسی برق

A Single-Switch Transformer-less High Step-Up DC–DC Converter with Continuous Input Current

نویسندگان :

Mohsen Arabkhazaeli¹ Aryan Khazaei² Hani Vahedi³ Reza Arabkhazaeli⁴ Ebrahim Afjei⁵

1- Faculty of Electrical Engineering, Shahid Beheshti University 2- Faculty of Electrical Engineering, Shahid Beheshti University 3- Electrical Engineering, Mathematics and Computer Science Delft University of Technology 4- babol noshirvani university of technology 5- Faculty of Electrical Engineering, Shahid Beheshti University

کلمات کلیدی :

non-isolated،quadratic،High step-up dc–dc converter،Continuous Input Current،low voltage stress

چکیده :

This paper introduces a non-isolated high step-up DC–DC converter intended for renewable energy systems, DC microgrids, and electric vehicle power interfaces. The designed topology combines quadratic voltage-boosting characteristics with voltage multiplier cells to achieve a high voltage conversion ratio at moderate duty ratio values. The converter provides a continuous input current and a common ground between the input and output, which improves system safety and electromagnetic compatibility. Operating principles are analyzed under continuous conduction mode (CCM), and closed-form expressions for voltage gain and semiconductor voltage rating are derived. The designed structure significantly reduces voltage rating on the active switch and diodes compared to conventional high-gain converters. Design considerations and loss analysis are also discussed to evaluate efficiency. Simulation results obtained using PLECS validate the theoretical analysis and demonstrate that the converter can achieve a voltage gain of approximately ten with low voltage rating, stable output voltage, and high efficiency, making it a suitable solution for high step-up DC–DC power conversion applications.